Some of my snakes will not eat if I am watching over them, they just wont. I clicked the 15 minute option, but I check in once every 5 or so. Pretty much I stay in the room because every single rat/asf/mouse seems to go into a corner and mess with the beding; they are not going to attack the snake. When I hear a thump I take a peek into the tub to make sure everythings going good and then I leave. Some people think leaving them alone with the prey is crazy ( Then again they normally only have a few snakes...)but if I waited around for each one to eat while I was watching a few wouldnt eat and Id be there all day. If you do have a large collection and wait for all the trouble feeders to eat in front of you then more power to ya.